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Article Dans Une Revue Environmental Science and Pollution Research Année : 2014

Long-term disruption of growth, reproduction, and behavior after embryonic exposure of zebrafish to PAH-spiked sediment

Résumé

A natural sediment spiked with three individual polycyclic aromatic hydrocarbons (PAHs; pyrene, phenanthrene and benzo[a]pyrene) was used to expose zebrafish embryos and larvae during 4 days. The total PAH concentration was 4.4 μg g−1 which is in the range found in sediment from contaminated areas. Quantification of metabolites in the larvae after exposure confirmed the actual contamination of the larvae and indicated an active metabolism specially for pyrene and benzo[a]pyrene. After a transfer in a clean medium, the larvae were reared to adulthood and valuated for survival, growth, reproduction, and behavior. Measured endpoints revealed a late disruption of growth (appearing at 5 months) and a trend toward a lower reproductive ability. Adults of embryos exposed to sediment spiked with PAHs displayed lethargic and/or anxiety-like behaviors. This latter behavior was also identified in offspring at larval stage. All together, these effects could have detrimental consequences on fish performances and contribution to recruitment.

Dates et versions

hal-01205094 , version 1 (24-09-2015)

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Caroline Vignet, Marie Helene Devier, Karyn Le Menach, Laura Lyphout, Jérémy Potier, et al.. Long-term disruption of growth, reproduction, and behavior after embryonic exposure of zebrafish to PAH-spiked sediment. Environmental Science and Pollution Research, 2014, 21 (24), pp.13877-13887. ⟨10.1007/s11356-014-2585-5⟩. ⟨hal-01205094⟩
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